I got a PM this afternoon. Turns out the way Marriott handles their emails for issues is they are assigned with the original post and do not change as your issue is moved around. So my original post went to Internet.Customer.Care but was routed to Marriott Rewards and the reply still showed ICC. Hence the confusion who I was dealing with. I hope Marriott IT can get that fixed.

As for the issue itself, I'm told they are looking into it. Thanks for those that did some checking as well and posted the images.